Focusing servo system with focus servo acquisition enable which

Details Focusing servo system with focus servo acquisition enable which Focusing servo system with focus servo acquisition enable which

1997-02-28

1999-06-15

Young, W. R.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

G11B 7095

Patent

active

059128674

ABSTRACT:
A method of focus search operation for focusing an objective lens in a focusing servo system for an optical recording/ reproducing apparatus. During an initialization stage, the objective lens is positioned for an initial up-search operation. When the objective lens is at an in-focus position, a focus acquisition operation is executed. If the focus acquisition operation is not completed successfully, the objective lens is continuously moved away from the recording surface to detect a focus point.

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